Using two unijunction transistors, this circuit found in Electronics World generates linear sawtooth signals. The frequency depends on the capacitors being around 500 Hz.
This circuit includes an AD converter for interfacing with a microprocessor and can be used as a...
The coil L2 has 64 turns of wire 28 or thinner wire in a 1 cm form coreless and L1 10 turns on L2....
When the sensor connected to points A and B is activated, removing the ground from the base of Q1...